How can I use the OSS ASN.1/C++ API in a multithreaded application?

Please review the section entitled "2.4 Multithreading considerations" in the OSS ASN.1/C++ Runtime API Reference Manual (September 2010 Edition) for the full answer. Here is a brief summary:

Guidelines For Using The OSS ASN.1/C++ API In Multithreaded Applications

  1. You should have a separate OssControl object for each thread.
  2. In versions prior to 4.1, you must specify the NOTRAPPING runtime flag to achieve thread-safety. In versions 4.1 and later, you should not set the OSS_TRAPPING flag.
  3. Do not use the Default error handling mechanism (i.e. the default asn1_get_last_error() ASN.1/C++ API function).
  4. Use OSS Special Memory Management Classes with the following Restrictions:
    • do not change the current memory system
    • deallocate each object belonging to the memory pools in the same thread that allocated it

The samples included with some of the Knowledge Center answers are meant for your general understanding of the OSS products. Different versions of the products might produce slightly different outputs. Consult the products documentation and samples for the most up-to-date products information and code examples.



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